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Home >> Scion >> 2012 >> iQ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P1604-P2A00) & Circuit Tests)) >> SFI System >> Circuit Tests >> ECM Power Source Circuit >> Inspection Procedure

Inspection Procedure

NOTE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .
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